Что нового в Kotlin 2.3.0

Language: more stable and default features, unused return value checker, explicit backing fields, and changes to context-sensitive resolution.

Kotlin/JVM: support for Java 25.

Kotlin/Native: improved interop through Swift export, faster build time for release tasks, C and Objective-C library import in Beta.

Kotlin/Wasm: fully qualified names and new exception handling proposal enabled by default, as well as new compact storage for Latin-1 characters.

Kotlin/JS: new experimental suspend function export, LongArray representation, unified companion object access, and more.

Gradle: compatibility with Gradle 9.0 and a new API for registering generated sources.

Compose compiler: stack traces for minified Android applications.

Standard library: stable time tracking functionality and improved UUID generation and parsing.

#kotlin 

https://kotlinlang.org/docs/whatsnew23.html